Determination of non-uniform sintering shrinkage in MIM powder compacts by digital image processing

R. Watanabe, Y. Mizuno, A. Kawasaki

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

An in-situ monitoring system for sintering shrinkage was devised to study the nonuniform deformation of injection moulded powder compacts. The monitoring system is based on the digital image correlation method and has a modified image processing software compared to the conventional method. The system consists of a bell-type sintering furnace and an optical image processing set-up, enabling one to measure two- and three-dimensional changes in the compacts during sintering on a non-contact and real time basis. Nonuniform and anisotropic sintering shrinkage was precisely determined for two types of complex-shaped powder compacts of stainless steel (SUS304) prepared by metal injection moulding at room temperatures up to 1543 K.

Original languageEnglish
Pages (from-to)163-169
Number of pages7
JournalMetals and Materials International
Volume5
Issue number2
DOIs
Publication statusPublished - 1999 Apr
Externally publishedYes

Keywords

  • Digital image correlation method
  • In-situ measurement
  • Metal injection moulding
  • Non-uniform shrinkage
  • Sintering shrinkage

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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